Safety razor with clamped blade



June 10, 1958 w. OSTROWSKI 2,337,320

SAFETY RAZOR WITH CLAMPED BLADE Filed Oct. 5, 1955 INVENTOR. WALTEROSTROWSKI SAFETY RAZOR wrrn CLAMPED BLADE Walter Ostrowski, New York, N.Y. Application October 3, 1955, Serial No. 538,120

1 Claim. or. 30-51 This invention relates to razors and, moreparticularly, has reference to a safety razor. I

An important object of the present invention is to provide a safetyrazor wherein the blade is so designed as to facilitate its swiftattachment to or detachment from the safety razor clamping head, withminimum difliculty and loss of time, and through the medium of arelatively simple connecting feature characterized not only by its lowcost of manufacture but also by its being rugged and possessed of aminimum number of parts, so as to not get out of order readily.

Another object of importance is to provide a razor of the naturereferred to which includes a blade so formed as to produce aparticularly smooth and effective shaving action.

Another object is to provide, in a safety razor, a clamping head for asafety razor blade including a stationary, U-shaped support yoke onwhich is pivotally mounted a correspondingly U-shaped clamp the legs ofwhich are formed with laterally projecting lips adapted, responsive torocking of the clamp to a selected position upon the yoke, to engage incomplementary recesses of the razor blade.

For further comprehension of the invention, and of the objects andadvantages thereof, reference will be had to the following descriptionand accompanying drawings, and to the appended claim in which thevarious novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

Fig. 1 is an exploded perspective view of a safety razor formed inaccordance with the present invention.

Fig. 2 is an enlarged sectional view on line 2-2 of Fig. 1, in which theblade is illustrated in clamped position.

Fig. 3 is a view similar to Fig. 2 in which the blade has beenunclamped.

Fig. 4 is a detail sectional view, still further enlarged, showing therockable mounting of the clamping yoke and the interengagement betweenthe yoke and blade.

Fig. 5 is a sectional view on line 5-5 of Fig. 1.

The reference numeral designates a safety razor handle, which may beformed of plastic or other suitable material, and which may have anydesired configuration. In the illustrated example, the handle isprogressively increased in cross-sectional area in the direction of itsouter end, the outer end edge of the handle being sharply beveled asshown in Fig. 1. The handle 10, at is upper end, is provided with anaxial projection 12, formed of metal and embedded in or otherwisefixedly secured to the inner end of the handle. The projection 12 has atransverse, upwardly opening slot 14, and engaged in said slot is adepending tongue 16 formed upon the lade support yoke 18 of the clampinghead of the safety razor. A blade 20, to be described in detailhereinafter, is supported upon the blade support yoke 18, and is securedfixedly in its use position by means of a United States Patent 02,837,820 Patented June 10, 1958 rockable clamping yoke 22 also carriedby the blade support yoke.

The blade support yoke 18, which may be appropriately termed astationary yoke, as shown in Fig. l is of U-shape, having an elongatedbight 24 extending transversely of the handle 10, said bight being ofchanneled cross'section as shown in Figs. 2 and 3 and merging at itsupper ends into correspondingly channeled legs 26, 26. The tongue 16 isintegrally formed upon the web of the bight medially between the legs26. At their upper ends, the inner side walls of the legs, as shown toparticular advantage in Fig. 1, are cut away to provide angular recesses28, said recesses defining horizontally disposed shoulders on which theblade 20 is adapted to rest.

Integrally formed on the upper ends of the outer side walls of legs 26are laterally projecting guard support armsSO, apertured at theiropposite ends and provided, a short distance inwardly from theapertures, with inwardly projecting, short support lugs 32 on which thesides at the cutting edge portion of the blade 20 are adapted to besupported, with the top surface of said blade flush with the top edgesof the respective arms.

Rotatably engaged in the apertures of arms 30 are reduced axialextensions or trunnions formed upon the opposite ends of a guard roller34, the surface of which is roughened, as by the provision oflongitudinally extending, circumferentially spaced ribs. The roller 34serves to protect the cutting edge of the razor blade and it alsoconstitutes a guard in the sense that it serves to space the blade edgeaway from the users face, during the shaving operation. It is to beunderstood that the roller is positioned against the fact with the bladeex tending obliquely to the surface of the face so as to act upon thebeard when the razor is shifted downwardly. Since roller 34 is free torotate when it is in contact with the face, it also facilitates thesliding ofthe razor during shaving.

Projecting forwardly from the respective arms 26, intermediate the upperand lower ends of the arms, are rivets 36, constituting pivot pins onwhich the rockable clamping yoke 22 is fulcrumed.

The rockable clamping yoke 22 is substantially coextensive in length andcorresponds in general shape to the blade support yoke 18, and thusincludes a bight 38 of channel cross section, merging at its oppositeends into upwardly projecting, channeled legs 40. Legs 40, intermediatetheir ends, have openings 42 receiving the pivot pins 36 which act as afulcrum for rocking legs 40. The openings 42 are slightly larger indiameter than the diameter of the respective pins, to provide for a freerockable movement of the rockable clamping yoke thereupon.

At their upper ends, the legs 49 of the rockable clamping yoke areintegrally formed with rearwardly projecting, transverse lips 44 adaptedto clampably engage the blade 20 when said blade is supported upon theshoulders 28.

The blade 20 includes a body 46 of tapered cross section, said bodybeing preferably hollow ground on its opposite faces as shown toparticular advantage in Fig. 1.

As shown in Figs. 2 and 3, the blade 20, along that longitudinal edgethereof opposite the cutting edge, is of substantial thickness, withsaid blade tapering in the direction of the cutting edge. Adjacent theback or thickened longitudinal edge of the blade body, there are formed,in opposite ends thereof, recesses 48, having back walls in planesparalleling the planes of the back edge surface of the blade body, saidback walls having longitudinal slots 50. Threaded openings 52, thepurpose of which will be presently made apparent, are formed in theblade body, communicating between the back edge surface thereof and theback walls of the recesses 48.

When the blade is to be attached to the safety razor head, it is droppedinto the spaces between lips 44 and the upper ends of the legs 26, withthe clamping-yoke 22 being rocked counterclockwise about its pivot 36 tothe Fig. 3 position thereof. The blade will now be supported in theposition shown in Fig. 2, and as a next step, the blade is clamped inposition by rotation of a screw 54 in a direction to advance the sametoward the blade support yoke 18. Screw 54 is threadedly engaged in anopening formed in the bight 38 of the rockable clamping yoke, and bearsagainst the elongated bight 24 of the blade support yoke 18. Thus, whenthe screw is turned home against the bight of the blade support yoke 18,it will cause the elongated bight portion of the rockable damping yoke22 to be swung outwardly from the blade support yoke 18, and this inturn causes the rockable clamping yoke to fulcrum upon the pins 36, toshift the lips-44 into the recesses 50 (see Figs. 2 and 4), thus causingthe blade body to be shifted against the upper ends 'of the legs 26 tocause the blade to be securely clamped between the respective yokes,with its cutting edge portion supported upon the lugs 32.

While I have illustrated and described the preferred embodiment of myinvention, it is to be understood that I do not limit myself to theprecise construction herein disclosed and that various changes andmodifications may be made within the scope of the invention as definedin the appended claim.

Having thus described my invention, what I claim as new, and desire tosecure by United States Letters Patent A razor comprising a handle, arecessed blade, and blade support means carried by the handle, and meanson the blade support means for fixedly engaging the blade against theblade support means, said blade support means comprising a U-shapedblade support yoke fixedly connected to the handle at the bight of theblade support yoke, said blade support yoke including legs adapted attheir free ends for supporting the back portion of the blade, lugs onsaid blade support yoke for supporting the front portion of the blade,the blade engaging means comprising .a U-shaped rockable clamping yokerockably mounted upon the blade support yoke, and a screw threadedlyengaged in the bight of the U-shaped blade support yoke and adapted tobear against the bight of the blade support yoke, to rock the rockableclamping yoke in a direction to clampably engage the blade between therespective yokes, the rockable clamping yoke including curved lipsformed upon the legs thereof bearing against the blade in the clampedposition of the blade and received in the recesses thereof.

References Cited in the file of this patent UNITED STATES PATENTS344,114 Kampfe et al. June 22, 1886 385,462 Kampfe et al. July 3, 1888847,782 Kampfe Mar. 19, 1907 1,074,126 Lochrnan Sept. 30, 1913 1,158,481Gillette Nov. 2, 1915 1,353,603 Malby Sept. 21, 1920 2,062,683 SmithDec. 1, 1936 FOREIGN PATENTS 1,099 Great Britain Apr. 6, 1905 5,958France July 28, 1906 (2nd addition to No. 311,061) 18,690 Great BritainAug. 18, 1930 129,096 Germany Mar. 10, 1902

